Mine would be having the PS2 with only two controller ports instead of 4 like Nintendo consoles. You had to buy an additional peripheral to let other 2 people play. Another thing would be the Game Boy's red LED to indicate power. It was never clear to me. I saw no difference from the batteries being half-empty to 5 minutes before the console would shut down. The first GBA was a load of bullshit for many reasons but they got the new way to measure battery life right.